“However, a small increase in the thrombin concentration (to 0.1 unit/ml) induces platelet aggregation, release of serotonin, and a sharp increase in PA accumulation which are effectively inhibited by indomethacin.”
“Low concentrations of thrombin (0.05 units/ml) induce only platelet shape change and a small stimulation of PA , changes which are only minimally inhibited by indomethacin.”